unclear point 中文意思是什麼
unclear point
解釋
含糊不清之點-
However, the movement and transformation of n in soil under fertigation remains unclear. the methods of simulation experiment and culture experiment were used to study the movement and transformation of n in soil under fertigation by drip irrigation. the main experimental results were shown as folio wings : ( 1 ) the water infiltration under drop irrigation is a point infiltration ; and the soil moisture in vertical and horizontal directions was increased with the irrigation time, and the movement rate were decreased with the irrigation time
本研究採用室內模擬試驗和生物培養試驗相結合的方法,研究了在滴灌施肥條件下,化學氮肥施入土壤后的遷移、轉化規律以及對作物生長的效應,獲得了以下主要結論: ( 1 )滴灌條件下水分以點源入滲土壤,水平和垂向的濕潤鋒均隨入滲時間的增加而逐漸變大,在入滲開始階段濕潤鋒的推進速率較大,隨入滲時間的延長,濕潤鋒的推進速率逐漸變慢。
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